JPS5614939A - Gas detector - Google Patents
Gas detectorInfo
- Publication number
- JPS5614939A JPS5614939A JP9120979A JP9120979A JPS5614939A JP S5614939 A JPS5614939 A JP S5614939A JP 9120979 A JP9120979 A JP 9120979A JP 9120979 A JP9120979 A JP 9120979A JP S5614939 A JPS5614939 A JP S5614939A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- sensor
- heater
- heating
- voltage applied
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To eliminate the influence of variations in power supply voltage to a sensor, by offsetting each other variations in heating power based on the fluctuations of a heater voltage and variations in a heating value due to self-heating of the sensor based on the fluctuations of a voltage applied thereto.
CONSTITUTION: The temperature of the sensor 1 has relation to the heating thereof by the heater 5 and the self-heating thereof by a voltage applied thereto. When the power supply voltage is varied, the voltage applied to the heater 5 and the voltage applied to a gas detecting unit 4 are varied. The heater voltage is varied in proportion to the power source voltage, while the voltage applied to the gas detecting unit 4 is varied in inverse proportion to the heater voltage by the operation of a voltage control unit 10. Accordingly, when tne heater voltage is increased due to the increase in the power supply voltage to cause the temperature of the sensor 1 to be increased, the voltage applied to the sensor 1 is decreased to cause the Joule heat based on self-heating thereof to be decreased. Thus, the heater voltage and the voltage applied to the sensor serve to offset variations in temperature of the sensor based on one of them against variations in temperature of the sensor based on the other.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9120979A JPS5614939A (en) | 1979-07-17 | 1979-07-17 | Gas detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9120979A JPS5614939A (en) | 1979-07-17 | 1979-07-17 | Gas detector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5614939A true JPS5614939A (en) | 1981-02-13 |
JPS6133378B2 JPS6133378B2 (en) | 1986-08-01 |
Family
ID=14020028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9120979A Granted JPS5614939A (en) | 1979-07-17 | 1979-07-17 | Gas detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5614939A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6136237U (en) * | 1984-08-01 | 1986-03-06 | フジタ工業株式会社 | Outlet structure for ventilation and air conditioning |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5177198A (en) * | 1974-12-27 | 1976-07-03 | Figaro Eng | DENGENDENATSUIZONSEIHOSHOKAIROTSUKIKEIHOSOCHI |
JPS52123296A (en) * | 1976-04-08 | 1977-10-17 | Matsushita Electric Works Ltd | Gas detector |
-
1979
- 1979-07-17 JP JP9120979A patent/JPS5614939A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5177198A (en) * | 1974-12-27 | 1976-07-03 | Figaro Eng | DENGENDENATSUIZONSEIHOSHOKAIROTSUKIKEIHOSOCHI |
JPS52123296A (en) * | 1976-04-08 | 1977-10-17 | Matsushita Electric Works Ltd | Gas detector |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6136237U (en) * | 1984-08-01 | 1986-03-06 | フジタ工業株式会社 | Outlet structure for ventilation and air conditioning |
Also Published As
Publication number | Publication date |
---|---|
JPS6133378B2 (en) | 1986-08-01 |
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